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NikolayIvkin
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TheAlgorithms
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src/main/java/com/thealgorithms/maths/RomanNumeralUtil.java
73 строки
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Piotr Idzik
style: enable `HideUtilityClassConstructor` in checkstyle (#5147)
08 май 2024, 09:58
Не верифицирован
08 май 2024, 09:58
d3bb691
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package com.thealgorithms.maths; /** * Translates numbers into the Roman Numeral System. * * @see <a href="https://en.wikipedia.org/wiki/Roman_numerals">Roman * numerals</a> * @author Sokratis Fotkatzikis * @version 1.0 */ public final class RomanNumeralUtil { private RomanNumeralUtil() { } private static final int MIN_VALUE = 1; private static final int MAX_VALUE = 5999; // 1000-5999 private static final String[] RN_M = { "", "M", "MM", "MMM", "MMMM", "MMMMM", }; // 100-900 private static final String[] RN_C = { "", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM", }; // 10-90 private static final String[] RN_X = { "", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC", }; // 1-9 private static final String[] RN_I = { "", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX", }; public static String generate(int number) { if (number < MIN_VALUE || number > MAX_VALUE) { throw new IllegalArgumentException(String.format("The number must be in the range [%d, %d]", MIN_VALUE, MAX_VALUE)); } return (RN_M[number / 1000] + RN_C[number % 1000 / 100] + RN_X[number % 100 / 10] + RN_I[number % 10]); } }